Radiator structure for furnaces



w. H. WAHL RADIATOR STRUCTURE FOR FURNACES v I Fil 0 1922 9 0.2L! "A"; "1 I" V I i a I Win11!!! A III/1M1 INVENTOR ATTORNEY-5 BY I .MYM.

' ture of standard size on a furnace,

Patented July 31, 1923. v

UMTEEQ stares WILLIAM H, Wanner nns vrornns, Iowa.

titans RADIATOR srnucrrrnn non rnnnn'cns.

Application filed Qctober 16, 1922'. Seria1"No. 594,757. W

To all whom it may concern: v Be it known that I, VVILLIAMl-I. VVAHL, a citizen of the United States, and a resident of Des Moinesfln the'county of Polk and State of Iowa, have invented a certaln new and useful Radiator Structure for Furnaces, of which the following is aspeciiication.

It is the object of my invention to provide a radiator structure for furnaces, which is of simple and inexpensiveconstruct1on.-

More particularly, it is the purpose of my invention to rovide such aradiator, which can be very readilyand easily adapted for use on a great many'different' makes of furnaces to make it possible to utilize a maximum of the heat generated by COIIlbllSiZlOIl,

A further purpose is to provide such a radiator which is especially adaptedvfor'use in connection with steam or hot water furnaces and boilers, whereby there may be 'se cured a maximum utilization of the heatgenerated, and whereby heat that might otherwise be wasted may be used for w'armlng air for heatingrooms or buildings. A further purpose'is' to provide such'a radiator structure of peculiar make-up for securing maximumxefiiciency and-also accurate control of the heat and drafts,

With theseand other objects in view, my invention consists in the COIlStIllCl71OI1, arrangement and combination of the various parts ofmy device, whereby the ob ects contemplated are attained, as-here-inafter more fully set forth, pointed out in my claim, and illustrated in the accompanying 'drawlngs, in which: I Y

Figure 1 shows a perspective view, partly in section, with parts broken away of a furnace equipped with a radiator structure embodying my invention.v y p g Figure 2 shows a vertical sectional 'VlBW through a portion of theradiator structure and the top of a furnace; and I Figure 3 shOWS a similar view illustrating the method of. mounting a radiator struchaving a small smoke outlet. I

In the accompanying drawings, in which I have illustrated the way inwhiohmy radiator structure may be embodied, l'have used the reference numeral 10 to indicate generally a hot water boiler and furnace,

' equipped with a radiator structure embod ing my invention. a. The top 11 of he furnace has an opening 12, which forms the outlet through which ti e! QFFEQEA the smoke andJproducts of combustion ordinarily pass to the chimney or stack.

Myradiator structurelcomprises an elongated tubularmember 13, the ends of which are preferably round,:as at 14 and 15. The

end lovis designed to be connected with a pipe leading'to the chimney or stack, while the end 14 is designed tobeclosed by a clean-out cover 16, which may be mounted on the member 18 or on a casing 17, which encloses thefurnace and boiler'lO and has its side walls spacedfrom the furnace and boiler 10. p 1 For-convenience, I have called the end 15,

the rear end ofthe member 13 of the radiator. i I Y Communicating with the tubular member 13 of the radiator at itssides near its forward end areconducting pipes 17% which are arranged to extend around the sides of the furnace and boiler 10, substantially as shown in F igure 1, toward the back of the furnace, and are inclineddownwardly from their forward to thelr rear ends, as shown.

The lower ends: ofthe conducting pipes- 17? communicate witha curved hollow drum l8-extendlng around the-back of the furnace between the rear ends of the pipes 17 At each end of the drum 18 is a clean-out v conducting passage 18 at the endof which is a door 18 1 13, said member'isprOVided with an 'enlarged portion 20 designed to be connected with the flange 21 around the opening'12 for affording means of communication between-the top of the furnace 10 and the ra'diator member 13.

In the pipe 19, there is mountedan'ordii nary. damper 22 of the throttle valve type on astem 23, which projects out, of the 'pipe l9. i

' In the radiator member 13 between the l member 20 and the pipe l9.i

damper 24 of the throttle valve type, having a stem 25, which projects from the tu bular radiator member 13.

.On the stem 23 is an arm 26 and on the stem 25 is an arm 27. A link 28. is pivoted at its ends to the respective arms261and2'l, as shown in Figure 1.

The dampers and their arms andthe connecting link 28 are so arranged, as illustrated for instance in Figure 1,. that the damper 22 is open when the damper 24 is' closed, and so that when the dampers are manipulated for opening the damper 24, such manipulation will serve to close the damper 22.

controllingrod29 is connected preferably with the arm 27, and extends forwardly through a suitable guide 30 to a convenient point of access in front of the furnace.

'The casing. 17 is provided with suitable doors 31 closing passages 32 leading to the combustion chamber of the furnace.

The casing is also provided withan. ash cleanout door 33 closing the passager34 leading tov the ash pit.

A draft door 35 is preferably mounted on the door 33 and hinged at its upper edge.

For permitting simultaneous control of the dampers 22 and 24 and the draft door 35. by means of the operation of the control rod 29, I have provided the following-means:

On the rod 29 is fixed a collar 36. cranklever device 37 has one armpivoted, as at 38, on some fixed part of thestructure and has pairs of upwardly projecting fingers 39. Each pair of fingers receives between its members the. rod 29, as shown in Figure l, and the pairs of fingers are located on opposite sides of the collar 36, so that when the rod 29 is moved longitudinally, the: bell crank lever structure 37 will. be swungon its pivot 38.

.Another arm of the bell crank, lever 37. is pivoted at 40.. to a link- 41, which extends downwardly. Near the lower endJQf' the link 41, a bell crank lever 42,.is pivotally Inountedat-43 on the bracket44-;or.other fixed part of thestructure.

One arm of, the bell. crank. lever .42 .is pivoted to the lower end of. thellink- 41. The other arm of, the bell crank-lever42 has a pin 45 projected through anelongated slot 46 ina controlling arm 47, which is fixed to the lower part. of the draft. door, 35, as for instanceby means of a rigid rod 48.

There my device is used with a hot Water furnace fOllIlStELIlCG, the hot water pipes v49 extend through the wall of the casing 17, for instance as shown in Figure 1..

I will now explain the practical operation of my improved radiator structurenbriefiy and will ,then refer to some ofits advantages.

It will be seen that the smoke and prod ucts of combustion from the ,furnacelO pass upwardly through the opening 12, into the tubular member 13 of the radiator structure. Ifthe damper 24 isthen open, the damper 22 will be closed, and the products'of coinbustion pass directlyto the stack or chimney,

A bell.

rearwardly and downwardly through the pipes 17 to thedrum 18. In; the. drum 18, suchproduots of combustion pass from the ends of the drum through the lower end of the. pipel9 and thence upwardly through the pipe;19:and.'the rear portion of the tubular i'.:-

member 13 to the chimney or stack.

-When .it isdesired. to. increase the draft, the rod 29. is. pulled forwardly. Whenthe particular construction shown in, the drawings is employed, this movement l of the rod29-will serveto open the damper 24 and; close the. damper 22. At the same time, the bell crank lever 37 will. be manipulatedforshoving the link 41 downwardly andi thus pulating the bell cranlr lever 42..-for shoving the arm .47. forwardly and opening the draft. door 85,

When my radiator structure is used in connection with. a hot water furnace and boilerh for instance, I have secured a numher I of advantages.

.Ordinarily, it is the custom, to cover the boiler structure 10 withasbestosor provide other; means for retaining the heat and preventingitstradiation,

Vilheremy. structure isused, I .donot use such an asbestos. covering but usethe casing 17 for leavinga space between the walls of the casing. L7. and the furnace or boiler 10. There. vis.thuslefta wall of air around the furnace orboiler 10.. Cold air issupplied to this; space, through the cold airduct. 50. Th s-air is warmed by heat radiated. from theboiler;=and..-furnace. and especially by heat radiated from my radiator structure members .17 ,13, 18 and 19. There is. thus alwaysa cushion of warm air around the hot. water-boiler.

Any heat lost in the-hot. water boiler is transmitted to the air around.

Muchtoflthe-heatof the products of combustion, which, would otherwise pass out through the stack or chimneyand be wasted, is utilized. by, means of radiation from the members 13,17, 18 -and,19.

The air thus heated by my device may be conductedthrough an, ordinary pipe 51 to a roomgorbuilding for heating inthe ordinary way by hot air. I

Iiind that with my. structurel can heat practically as much water ascan be done with the samehot water boiler without. my device, while in addition, I. canheat enough air to warmseveral-rooms or a building,

Thus. wherea device of this kind is used for three cottages arranged close together, it can be placed under one of the cottages, which can be heated by hot air, while the hot water can be conducted to the other cottages for heating them.

The device can be readily used with steam My radiator structures are made in standard sizes and can be readily assembled in connection with furnaces of different sizes and makes, providing such furnaces have their smoke outlets at the top.

The member 20 is of a size to fit the larger openings 12 in furnaces, and where it is too large to fit the opening in the furnace, to which it is to be applied, I use a step-down connection sleeve 52, which is smaller at one end than at the other, as illustrated in Figure 3 for connecting the member 20 and the flange 21.

It will be understoodthat considerable changes may be made in the construction and arrangement of the details of my device without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claim, any such changes or modifications as may come withinits scope. c v I For instance, the controlling means for the dampers and draft door. may be varied in a greatmany ways as to details and yet'the same general purpose can be readily ac- I intend to cover the particular structure and arrangement shown, but I believe my complished.

invention is considerably broader thansuch arrangement and construction, and it is my purpose to cover all of my real invention. I claim as my invention: In a device of the class described, the combinationof a furnace combustion chamber with a hot-air chamber having its walls spaced therefrom to leave an intervening prising a pipe extending across the top of v downwardly and rearwardly, a curved hol low drum connecting the lower end of the last-described pipes a pipe connecting the central portion of said drum with the rear portion of said first pipe, and a cold air duct communicating with low said drum.

said comp artment be- 1 WILLIAM WAH y 50 compartment, a smoke conducting and radiator structure in said compartment, conu- 

